Plastic Pollution
Akopọ
Plastic is one of the most useful materials ever invented: cheap, light, strong and almost indestructible. That last quality is exactly the problem. The plastic bag you use for ten minutes may outlive your grandchildren, drifting in the ocean for centuries, breaking into ever smaller pieces but never truly going away. Today vast rafts of plastic circle the oceans, and tiny fragments turn up inside fish, seabirds and even ourselves.
In this lesson you will learn the difference between conventional, bio- and biodegradable plastics, and what microplastics are. You will see how plastic pollutes marine ecosystems, from tangling and choking wildlife to building up through the food chain, and study the strategies, from avoiding single-use plastics to recycling and tough laws, that could turn the tide.
Awọn Afojusun
- 3.6.1 Describe conventional plastics as plastics made from fossil fuels that are generally non-biodegradable.
- 3.6.2 Describe bioplastics as plastics that can be biodegradable or non-biodegradable and are fully or partly made from biological raw materials rather than from fossil fuels.
- 3.6.3 Describe biodegradable plastics as plastics that: (a) are designed to decompose in water or soil (b) are decomposed by the action of bacteria and fungi into water, biomass and gases (carbon dioxide and methane) (c) decompose at different rates depending on biotic and abiotic factors.
- 3.6.4 Describe non-biodegradable plastics as plastics that break down over a long period of time.
- 3.6.5 Describe microplastics as plastics that are: (a) less than 5 mm in length (b) formed when larger plastics break down (c) used in commercial products.
- 3.6.6 Describe and explain the impacts of plastic pollution on marine ecosystems, limited to: (a) visual pollution (b) entanglement (c) risk of being mistaken for food by marine animals (d) bioaccumulation and biomagnification.
- 3.6.7 Describe and explain strategies for managing the impacts of plastic pollution, limited to: (a) alternative packaging (b) avoiding single-use plastics (c) safe disposal (d) recycling (e) legislation and enforcement.
Akọ̀wé Ẹ̀kọ́
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori Plastic Pollution. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- Microplastics are plastic pieces: A. larger than 5 cm B. less than 5 mm in length C. always biodegradable D. made only from plants Answer: B
- Conventional plastics are: A. made from biological materials B. always biodegradable C. made from fossil fuels and generally non-biodegradable D. decomposed quickly by bacteria Answer: C
- Which statement about bioplastics is correct? A. they are always biodegradable B. they are made only from fossil fuels C. they may be biodegradable or non-biodegradable D. they never break down Answer: C
- A turtle dies after swallowing a plastic bag. This is an example of: A. visual pollution B. plastic being mistaken for food C. recycling D. eutrophication Answer: B
- Which strategy reduces plastic pollution at its source? A. cleaning ocean gyres B. avoiding single-use plastics C. burning all plastic D. dumping it at sea Answer: B
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Awọn Iwe Itọsọna Ti a Gba Nimọran
Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe
Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Plastic Pollution? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
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